The current audio session mode.
- iOS 5.0+
- tvOS 9.0+
- watchOS 2.0+
- Mac Catalyst 13.0+Beta
The audio session mode, together with the audio session category, indicates to the system how you intend to use audio in your app. You can use a mode to configure the audio system for specific use cases such as video recording, voice or video chat, or taking measurements.